package com.zdgcc.site.util;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class CharacterFilter implements Filter {
	private FilterConfig config = null;

	public void destroy() {
		config = null;
	}

	public void doFilter(ServletRequest arg0, ServletResponse arg1, FilterChain arg2) throws IOException, ServletException {
		// 强制类型转换
		HttpServletRequest request = (HttpServletRequest) arg0;
		HttpServletResponse response = (HttpServletResponse) arg1;
		// 获取web.xm设置的编码集，设置到Request、Response中
		request.setCharacterEncoding(config.getInitParameter("charset"));
		response.setContentType(config.getInitParameter("contentType"));
		response.setCharacterEncoding(config.getInitParameter("charset"));

		// 将请求转发到目的地
		arg2.doFilter(arg0, arg1);
	}

	public void init(FilterConfig arg0) throws ServletException {
		this.config = arg0;
	}

}
